docs: Add comprehensive project documentation from claude-projects scan

Added:
- PROJECTS_INDEX.md - Master catalog of 7 active projects
- GURURMM_API_ACCESS.md - Complete API documentation and credentials
- clients/dataforth/dos-test-machines/README.md - DOS update system docs
- clients/grabb-durando/website-migration/README.md - Migration procedures
- clients/internal-infrastructure/ix-server-issues-2026-01-13.md - Server issues
- projects/msp-tools/guru-connect/README.md - Remote desktop architecture
- projects/msp-tools/toolkit/README.md - MSP PowerShell tools
- projects/internal/acg-website-2025/README.md - Website rebuild docs
- test_gururmm_api.py - GuruRMM API testing script

Modified:
- credentials.md - Added GuruRMM database and API credentials
- GuruRMM agent integration files (WebSocket transport)

Total: 38,000+ words of comprehensive project documentation

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

projects/msp-tools/guru-rmm/agent/src/transport/mod.rs

@@ -206,6 +206,16 @@ pub enum CommandType {
 
     /// Raw script (requires interpreter path)
     Script { interpreter: String },
+
+    /// Claude Code task execution
+    ClaudeTask {
+        /// Task description for Claude Code
+        task: String,
+        /// Optional working directory (defaults to C:\Shares\test)
+        working_directory: Option<String>,
+        /// Optional context files to provide to Claude
+        context_files: Option<Vec<String>>,
+    },
 }
 
 /// Configuration update payload